Search Results for author: Xiaoyuan Zhang

Found 11 papers, 3 papers with code

Few for Many: Tchebycheff Set Scalarization for Many-Objective Optimization

no code implementations30 May 2024 Xi Lin, Yilu Liu, Xiaoyuan Zhang, Fei Liu, Zhenkun Wang, Qingfu Zhang

Existing optimization methods often focus on finding a set of Pareto solutions with different optimal trade-offs among the objectives.

Smooth Tchebycheff Scalarization for Multi-Objective Optimization

no code implementations29 Feb 2024 Xi Lin, Xiaoyuan Zhang, Zhiyuan Yang, Fei Liu, Zhenkun Wang, Qingfu Zhang

Multi-objective optimization problems can be found in many real-world applications, where the objectives often conflict each other and cannot be optimized by a single solution.

valid

PMGDA: A Preference-based Multiple Gradient Descent Algorithm

no code implementations14 Feb 2024 Xiaoyuan Zhang, Xi Lin, Qingfu Zhang

It is desirable in many multi-objective machine learning applications, such as multi-task learning with conflicting objectives and multi-objective reinforcement learning, to find a Pareto solution that can match a given preference of a decision maker.

Multi-Objective Reinforcement Learning Multi-Task Learning +1

UMOEA/D: A Multiobjective Evolutionary Algorithm for Uniform Pareto Objectives based on Decomposition

no code implementations14 Feb 2024 Xiaoyuan Zhang, Xi Lin, Yichi Zhang, Yifan Chen, Qingfu Zhang

Multiobjective optimization (MOO) is prevalent in numerous applications, in which a Pareto front (PF) is constructed to display optima under various preferences.

Multiobjective Optimization

Panacea: Pareto Alignment via Preference Adaptation for LLMs

no code implementations3 Feb 2024 Yifan Zhong, Chengdong Ma, Xiaoyuan Zhang, Ziran Yang, Haojun Chen, Qingfu Zhang, Siyuan Qi, Yaodong Yang

Panacea trains a single model capable of adapting online and Pareto-optimally to diverse sets of preferences without the need for further tuning.

Language Modelling Large Language Model

CivRealm: A Learning and Reasoning Odyssey in Civilization for Decision-Making Agents

1 code implementation19 Jan 2024 Siyuan Qi, Shuo Chen, Yexin Li, Xiangyu Kong, Junqi Wang, Bangcheng Yang, Pring Wong, Yifan Zhong, Xiaoyuan Zhang, Zhaowei Zhang, Nian Liu, Wei Wang, Yaodong Yang, Song-Chun Zhu

Within CivRealm, we provide interfaces for two typical agent types: tensor-based agents that focus on learning, and language-based agents that emphasize reasoning.

Decision Making

Dealing with Structure Constraints in Evolutionary Pareto Set Learning

no code implementations31 Oct 2023 Xi Lin, Xiaoyuan Zhang, Zhiyuan Yang, Qingfu Zhang

In this work, we make the first attempt to incorporate the structure constraints into the whole solution set by a single Pareto set model, which can be efficiently learned by a simple evolutionary stochastic optimization method.

Multiobjective Optimization Stochastic Optimization

Continuation Path Learning for Homotopy Optimization

1 code implementation24 Jul 2023 Xi Lin, Zhiyuan Yang, Xiaoyuan Zhang, Qingfu Zhang

Homotopy optimization is a traditional method to deal with a complicated optimization problem by solving a sequence of easy-to-hard surrogate subproblems.

Decision Making

Pareto Set Learning for Expensive Multi-Objective Optimization

1 code implementation16 Oct 2022 Xi Lin, Zhiyuan Yang, Xiaoyuan Zhang, Qingfu Zhang

This work represents the first attempt to model the Pareto set for expensive multi-objective optimization.

Bayesian Optimization Decision Making

Simplifying Polylogarithms with Machine Learning

no code implementations8 Jun 2022 Aurélien Dersy, Matthew D. Schwartz, Xiaoyuan Zhang

Polylogrithmic functions, such as the logarithm or dilogarithm, satisfy a number of algebraic identities.

BIG-bench Machine Learning

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